Portion of a shoe upper



FIG. 1 is a first perspective view of a portion of a shoe upper showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a front view thereof; and,

FIG. 4 is a top view thereof.

The broken line immediately adjacent to the shaded area represents an unclaimed boundary of the design. The broken line showing of the remainder of the shoe is for illustrative purposes only and forms no part of the claimed design. The difference in shading represents a contrast in appearance and does not depict any specific color, material, or texture. 

The ornamental design for a portion of a shoe upper, as shown and described. 